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Finding the Fourth Proportional to 9,963.42, 13,748.94 and 5,486.28

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Solution

The fourth proportional to 9,963.42, 13,748.94 and 5,486.28 is: 7,570.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.42 : 13,748.94 = 5,486.28 : x
  2. Step 2: Convert to fraction form
    9,963.42/13,748.94 = 5,486.28/x
  3. Step 3: Cross multiply
    9,963.42x = 13,748.94 × 5,486.28
  4. Step 4: Simplify right side
    9,963.42x = 75,430,534.54
  5. Step 5: Solve for x
    x = 75,430,534.54/9,963.42
  6. Step 6: Final answer
    x = 7,570.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.